Search International and National Patent Collections

1. (WO2017034583) PARTICULATE MATTER SENSOR WITH ENGINEERED PARTICLE SIZE CUT-POINT

Pub. No.:    WO/2017/034583    International Application No.:    PCT/US2015/047243
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Aug 28 01:59:59 CEST 2015
IPC: F01N 11/00
Applicants: CUMMINS EMISSION SOLUTIONS INC.
Inventors: CREMEENS, Christopher M.
YEZERETS, Aleksey
PRATTIPATI, Reshma
ROBINSON, Michael A.
Title: PARTICULATE MATTER SENSOR WITH ENGINEERED PARTICLE SIZE CUT-POINT
Abstract:
An aftertreatment system comprises a particulate filter configured to filter PM possessing a predetermined, least effective size range included in an exhaust gas flowing through the aftertreatment system. A PM sensor assembly is positioned downstream of the particulate filter and includes a housing having an inlet, an outlet, a sidewall and defines an internal volume. A PM sensor is positioned within the internal volume. The housing is configured to redirect a flow of exhaust gas entering the PM sensor assembly around the PM sensor so that small particles included in the exhaust gas flow having a first size within or smaller than the predetermined size range are directed around the particulate matter sensor. Large particles having a second size larger than the predetermined size range impact the PM sensor. A controller is communicatively coupled to the PM sensor.